JPS5863455A - inkjet recording head - Google Patents

Abstract

PURPOSE:To provide a full line multiarray type ink jet recorder which facilitates replacement of components and is simple to maintain and manage the total device, by a method wherein a large number of ink jet head units are arranged to a set position formed at one side of a stand. CONSTITUTION:A plurality of head units 101 each provided with a large number of ink jet nozzles aligned in a row, are attached to a retainer plate 106 to form a full line multiarray, and in which case, each head unit 101 is installed to the retainer plate 106 so that it matches with a set reference surface 145, in a transversal direction, of an orifice 102 and a set reference surface 147, in a longitudinal direction, of an orifice surface 146.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inkjet recording apparatus, and more particularly, to a recording apparatus equipped with an inkjet system generally referred to as a full-line multi-array type.

Among the various recording methods currently known, it is a non-impact recording method that produces almost no noise during recording, and is capable of high-speed recording. A place where you can record the Qζ era without having to use fixation and embedding.The inkjet recording method can be used for printing with various typesetting printers, word processors, copying machines, etc.! This is an extremely useful method for realizing 11.

This inkjet recording method uses a small amount of recording liquid (referred to as ink in the following explanation).
(droplet) is made to fly using mechanical principles of action,
Part II: Recording is performed by attaching it to a recording material such as paper. The ink droplet generating device, holder, and inkjet device used in such an inkjet recording method consist of an inkjet head for forming ink and an ink supply system for supplying the ink to the inkjet head. As the form of Ml in the ml inkjet head,
There is a type generally called a single type or semi-multi type that has 1 to 10 mho ink ejection ports. These have a relatively simple head structure, and in the event of a failure or damage, it is easy to convert the head, but the cost is inevitably high. When using a head with a separate layer, generally called a full-line multi-array type, which is used for the purpose of almost simultaneous printing, there is an increased probability that part of the head will malfunction71. It is not easy to replace the head, and there are also restrictions on the cost of replacing the entire head.

The present invention solves these problems 4 and is stable and 4I
Printing device equipped with a full-line multi-array type inkjet system - provided by the present invention Refreshingly, with the present invention, the work is easy, and the maintenance and management of the entire device is easy. Another object of the present invention is to provide a recording device equipped with a full-line multi-array type inkjet system that is easy to use.

Hereinafter, the present invention will be described in detail based on embodiments using drawings.

FIG. 111 is an external perspective view of the recording apparatus of the present invention. In this Jg1 diagram, 101 is the recording head unit,
This recording head unit 101 is composed of an inkjet head 103 having a plurality of ink ejection orifices 102k arranged in a line, a driver 104, and a wiring section 105.
03. The drive control section 104 and the wiring section 105 are connected to each other by a bonding wire (not shown), a printed board, etc., and the head unit 101 can perform printing operations individually by inputting a wiring signal to the wiring section 105. Possible! The wrinkles 0106 that are set as 0106 are 6 on the support plate of the head unit 101, and there are t on both the front and back sides.
II) 101tb! Immediately multiple pieces as indicated by J.
Width of specified printing paper in parallel (... 9, - character)
The orifice 102 is newly installed and has a full line arrangement. Each head unit 101 has a support plate 1
The head positioning plate 107 attached to the head positioning plate 107 determines the normal position in the horizontal direction 111IIIi, and the head holding plate 108 determines the identification position in the vertical direction g*.
6K, and is detachably installed.

109 is a matrix 7 lexical printed board for transmitting an output signal from a signal output section (not shown) to the wiring 105 of each head (any)'101 via a cable 110 and a connector 111; Using the jig 112, the moxibustion head (two) 101 is pressed against the separate Q wiring section 105 and each arrangement is made! It is electrically connected to the first part 105. In this case, the printed board 109, weight, and @gtos are not connected to each other, and can be attached and detached freely.

113 is a lead terminal mounting plate, which is attached to the head unit 101.
OMJJ from a signal output section (not shown) for driving
O (LF!! 114 and each head unit) 1
A signal line (not shown) directly connected to the head 103 of 01 is removably connected with screws or the like.

Both 115 and 115' are ink supply pipes for supplying ink from the ink tank 116 to each head section 103K.

(N/supply m pipe 115, l15'U, 7 to each)'
9103K are connected in pairs, and when ink is ejected, two supply pipes 115 and 115"i are connected to the head*1.
Ink is supplied to the ink tank 116 and the head part 103 is connected to the ink tank 116 by a pulp mechanism (not shown) attached to the ink tank 116, one for pressurized feeding and the other for ink supply. The ink tank 116 is equipped with a cylinder pull 117 containing a pressure pump for operating the pulp mechanism, and an air filter having a ventilation hole. A block 11g is attached to the air filter block 118, and a removable cap 119 is attached to this air filter block 118 to prevent ink from scattering during transportation.

The ink tank 116 is also provided with an ink replenishment port (not shown), through which ink is replenished from the replenishment tank 120 so that the ink level in the ink tank 116 is kept approximately constant. This replenishment tank 12G is provided with nine fixing claws 121, 121 on the ink tank 116 side.
' is removably locked to the ink tank 116.
It is now possible to exchange old and new tanks as needed. The ink tank 116 is fixed on an ink tank mount (not shown) 9 and is also fixed to the support plate 106 by means of fixing fittings 122 and 122'.

123 is a cover for the head unit 101 equipped with an ink supply pipe 115 and a l15'o fixing thread; this cover 123 is damaged by impact etc. when the head unit 101 is contaminated with ink, etc. It is designed to prevent this.

Reference numerals 124 and 124' indicate positioning pins, which are fitted into pinholes attached to a paper conveyance system (not shown) to maintain a predetermined distance and positional relationship between the orifice 102 of each head 103 and the recording paper. is set to -.

Further, the positioning bins 124 and 124' are fixed to the support plate 106 by respective brackets 125 and 125',
It is.

Reference numeral 126 denotes a substrate 69 for mounting the support plate 106 on the illustrated inkjet recording apparatus t--the device body (not shown). A driving lIk mechanism and an Oriswiss 102 capping mechanism are attached.

In addition, the support plate 1O16 has its front S connected to the support plate guide 127.
, 127', and the rear S is supported by the support plate 106.
It is supported by hinge holders 129, 129' via hinge stands 128, 128' attached to the. These hinge holders 129 and 129' each have a guide axial force? - on the two guide shafts 131, 131' via 130, 130'! 1# Enabled to be excited.

The guide shaft 131 is supported by a guide shaft bracket 132 on the substrate 126 (the guide shaft 131' side is not shown). By moving the support plate 106 once or retreating, the guide 127, 1!7'
Slide the upper part and move it in the direction of the arrow in the figure, and move the front end of the head to the opening position, capping position, maintenance position, etc.
It can be set in a predetermined position.

133 is a head for capping and cleaning the Oriice 102, and the @ surface facing the orifice has a discharge hole for ejecting air or cleaning at-air toward the orifice, and conversely for suction. It has a suction hole (both not shown). The blooming hole and the suction hole are connected to pressure side tubes 134 and 134' at locations not shown, respectively.
and suction side f use 135, 135'rl: contact fi,
Connected to joints 136 and 137 9, pressurized * joint 1
36 is connected to the air filter (not shown) through a refill extractor (not shown), and the suction side joint 137 is connected to a filter (not shown) (t) through the suction side joint 137.
A pump (not shown) is connected to the pressurizing side and suction side, and the cap 31! Neru cleaner head 133
Also, in response to the movement of the support plate 106, the flame force at the time of completion,
It is set so that it can take the posture during capping and the posture during maintenance.

Further, the support plate 106 can rotate around the hinge bins 138 and 138' attached to the hinge stands 128 and 128' as spindles so that the orifice 102@ surface of the support plate 106 forms an arc. This support plate 106 is constructed by crimping a stay 141, one end of which is pivotally attached to a stay angle 14G fixed to the iIs plate 126, to a stay angle 139 joined to the support plate 106 with a screw 142. It can be identified by making an angle of il with respect to the plane.

Furthermore, by removing the identification screw 142 from the stay angle 139, the support plate lo6'1 can be easily removed from the substrate 126.

Incidentally, 143 is the tube 134, 134', 135
．． 135' is a tube guide for fixing it on the board 126. 69.144 is a cable 11G, signal 11114
This is a safe case. As a result, when the illustrated inkjet recording device is attached to the unillustrated device main body,
It is possible to prevent damage and multiple cuts caused by unexpected external pressure being applied to the cable 110 or the signal @ 114.

! Figure 2 is the head unit shown in the #g1 figure example) 1
Support for 01°' @ lo6 on the village is the state in detail a
FIG. 3 is a partial external perspective view for viewing.

Head positioning plate 107 attached to support plate 106
The horizontal installation standard of the orifice 102 iii 1
45 and an installation reference surface 147 in the front-rear direction of the orifice surface 146 is provided.

The reference planes 145 are all provided in the same direction with respect to one side end m 148 of the head positioning plate 107, corresponding to the number and position of the head units (1010) disposed on the support plate 106. On the other hand, the head unit 101
The side surface of the head portion 103 facing the O reference surface 145 is 1
The 16 planes are machined at f1 degree, and by aligning the @ planes of the head parts 101 with the reference planes 145K, the horizontal positional deviation of the orifices lQ2O at each head part 103 is within 72 of the pitch of the orifices 102. It is now possible to stop it.

Also, the orifice ai in the head positioning plate 107
The reference plane 147 in the front and rear direction of 146 is common to all of the head units 103 disposed on the support plate 106 , and by aligning the orifice surface 146 of each head unit with the reference plane 147 of the head positioning plate 1070, each The orifice surfaces 146 of the head @ 103 can be arranged on the same plane. Each orifice surface 146 is referenced @ 147
For example, there is a method for aligning the orifice surface 146 of each head portion with the tooth edge of a removable flat plate at the reference surface 147, and by this method, the orifice surface 146 is aligned with the reference surface 147. can be matched accurately.

As described above, each head unit) 101 & support plate 10
60 is placed in a predetermined position, the head holding plate 108,
By fixing the head 5103 by 108',
The vertical position of the head unit 101 is defined based on the head unit installation m of the support plate 106.

That is, the arrangement on the head unit 1010 board 106 includes a head positioning plate 107, a head holding plate 108,
108' allows the head unit 103 of 101 to be connected to each reference plane 145 without the need for a rigid fixing device.
and 147K matching and identification, thereby making it possible to arrange a plurality of head units at predetermined positions.

Figure jIa and Figure 4 respectively show modified examples of the head holding plate '1? A certain 〇Tomi 3 figure is arranged on the support plate 106 and the friend head ennit 1
01 are collectively identified and proportionally identified by the head holding plate 149, and Figure 314 shows the support stands 151,
101 heads f4 are individually set 41c from the head holding plate 152fC through the head holding plate 152fC. At this time, head presser [15! A round hole 153 is provided in the vertical direction of the hole 153, so that the situation inside the valley head 103 can be observed from the recess ζ.

In addition, in this @mei, the head holding plate is 108 in the example shown in the second figure.
, 108' or 152 in the example shown in Figure 4 makes it possible to observe the internal state of each spatula 2 door.
In addition, by using the shape of the head holding plate t11-3 shown in the figure and jg4 shown in the figure, and by using a thermally conductive material as the material, the temperature distribution in each head @ 103 is made uniform. Therefore, the ilf of the ink supplied to each oriice 102 and furthermore to each head unit 101 is
By eliminating the viscosity difference caused by the difference, it is possible to stabilize the ejection shape m of ink from each orifice 102.

In the text of Mukai and Narukami, the ink supply system related to the inkjet head section, the drive system of the head, etc. l
For convenience, the explanation is omitted.

The knit placement position is completed by collecting and arranging the knits, and at this time, the setting of each knit placement position (z=knit placement position) can be done extremely well. Moreover, even though the ink ejection ports in all 22 units are arranged in precise lines, the component parts have been carefully examined to make it possible to assemble only those with good performance. Also, as mentioned above, if the unit dies due to damage etc. and it becomes necessary to replace it, the f! The maintenance work is very efficient and economical because the replacement work can be done by removing and installing the unit in the X section.

[Brief explanation of the drawing]

FIG. 1 is an oblique view of the external appearance of a recording device to explain one implementation of the vA of the present invention, and FIGS. It is a diagram. In the figure, 101 is a recording head unit), 102 is an ink ejection orifice, 103 is an inkjet head unit,
104 is a drive control unit, 105 is an arrangement part, 106 is a support plate, 107 is a head positioning plate, 108° 108',
149 and 152 are head holding plates, 109 is a printed board, 11G is a cable, lil is a connector, 112 is a pressing jig, 113 is a lead terminal mounting plate, 114 is a signal line,
115, 115' are ink supply pipes, 116, 120
is the ink tank, 118 is the air filter block, 1
21, 121' are fixed claws, 122, 122' are identification fittings, 123 are covers, 124, 124' are positioning bits, 125, 125', 132 are brackets, 12
6 is a substrate, 127, 127' is a support plate guide, 128
゜128' is a hinge stand, 129, 129' are hinge holders, 130, 130' are guide shaft cups 1131
, 131' is a guide shaft, 133 is a cleaner head, 1
34, 134'. 135-, 135' are tubes, 136, 137 are joints, 138, 138' are hinge bins, 139, 14
0 is stay 1 angle, 141 is stay, 142 is screw,
143 is a tube guide, 144 is a track maintenance case, 145
, 147 is an installation reference surface, and 146 is an orifice surface. Patent Applicant Canon Co., Ltd. Agent Gi Marushima-゛°゛da1den,゛shin111,

Claims (1)

[Claims] A support stand for a plurality of inkjet apparatuses configured separately in advance is provided, a position where the apparatuses are arranged side by side is set on at least one side of the support stand, and each inkjet apparatus is aligned and fixed. Characteristic recording device.